Apple Mac OS X Server Migration For Version 10.3 or Later Manuel d'utilisateur télécharger pdf (Page 53)

Glossary 53

ORBS (Open Relay Behavior-modification System) An Internet service that blacklists

mail servers known to be or suspected of being open relays for senders of junk mail.

ORBS servers are also known as RBL (real-time black-hole list) servers.

percent symbol (%) The command-line prompt in the Terminal application. The

prompt indicates that you can enter a command.

POP (Post Office Protocol) A protocol for retrieving incoming mail. After a user

retrieves POP mail, it is stored on the user’s computer and usually is deleted

automatically from the mail server.

privileges Settings that define the kind of access users have to shared items. You can

assign four types of privileges to a share point, folder, or file: read and write, read only,

write only, and none (no access).

RBL (real-time black-hole list) An Internet service that blacklists mail servers known to

be or suspected of being open relays for senders of junk mail.

relay point See open relay.

short name An abbreviated name for a user. The short name is used by Mac OS X for

home directories, authentication, and email addresses.

SMTP (Simple Mail Transfer Protocol) A protocol used to send and transfer mail. Its

ability to queue incoming messages is limited, so SMTP usually is used only to send

mail, and POP or IMAP is used to receive mail.

spam Unsolicited email; junk mail.

SSL (Secure Sockets Layer) An Internet protocol that allows you to send encrypted,

authenticated information across the Internet.

TCP (Transmission Control Protocol) A method used along with the Internet Protocol

(IP) to send data in the form of message units between computers over the Internet. IP

takes care of handling the actual delivery of the data, and TCP takes care of keeping

track of the individual units of data (called packets) into which a message is divided for

efficient routing through the Internet.

UCE (unsolicited commercial email) See spam.

UDP (User Datagram Protocol) A communications method that uses the Internet

Protocol (IP) to send a data unit (called a datagram) from one computer to another in a

network. Network applications that have very small data units to exchange may use

UDP rather than TCP.

UID (user ID) A number that uniquely identifies a user. Mac OS X computers use the

UID to keep track of a user’s directory and file ownership.

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Apple Mac OS X Server Migration For Version 10.3 or Later Manuel d'utilisateur Page 53